Looping Statements in PHP 5.3

Looping statements are the backbone of PHP. I use them on a daily basis and they make things really simple. But I always think back to the days when everything except the WHILE loop looked alien to me and I wonder if anyone else feels the same? Do you wonder what those annoying looking $i variables are doing in that FOR loop? Or what's that funny arrow in the FOREACH loop? It all really is much more simple than you think. Let's have a look.